Religious reform
The Wahhābī movement, which introduced a new factor into the pattern of Arabian politics, was founded by Muḥammad ibn ʿAbd al-Wahhāb, a reformer influenced by the writings of the 13th–14th-century pietist theologian Ibn Taymīyah, of the strict Ḥanbalī school of Islamic law. It was ʿAbd al-Wahhāb’s intention to purify Islam of polytheism and to return it to an idealized primitive state. Expelled from his hometown in Najd, he moved to Al-Dirʿiyyah, a village that had never been ruled by the Ottomans, and obtained the protection and the adherence of its chief, Muḥammad ibn Saʿūd.